MCQ
Which of following can be prepared effectively by Williamson ether synthesis
- A

- B

- ✓

- D






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$(I)$ $XeF_6 +NaF \to Na^+ [XeF_7]^-$ $(II)$ $2PCl_5(s) \to [PCl_4]^+[PCl_6]^-$
$(III)$ $[Al(H_2O)_6]^{3+} + H_2O \to [Al(H_2O)_5OH]^{2+} + H_3O^+$
Possible transformations are:
$X$ and $Y$ are
[Atomic number, $\mathrm{Cr}=24, \mathrm{Mn}=25, \mathrm{Fe}=26, \mathrm{Co}=27$ ]